Cylinder cover for internal combustion engine

Abstract

Cylinder cover for an internal combustion engine, comprising a cylinder head, a cylinder head cover, an intermediate flange arranged between the cylinder head and the cylinder head cover, a plurality of fasteners for fastening the cylinder head cover and the intermediate flange to the cylinder head. The plurality of fasteners comprising a first fastener having a first head with internal threads, and a first shaft with first external threads, and a second fastener comprising a second head, and a second shaft with second external threads. The first fastener fastens the intermediate flange to the cylinder head and the second fastener fastens the cylinder head cover to the intermediate flange.

The invention claimed is: 
     
       1. An internal combustion engine comprising:
 a cylinder head; 
 a cylinder head cover; 
 an intermediate flange arranged between the cylinder head and the cylinder head cover; 
 a plurality of fasteners for fastening the cylinder head cover and the intermediate flange to the cylinder head, the plurality of fasteners comprising:
 a first fastener, the first fastener comprising a first head with internal threads, and a first shaft with first external threads; and 
 a second fastener, the second fastener comprising a second head, and a second shaft with second external threads; characterized in that: 
 the first fastener fastens the intermediate flange to the cylinder head such that the first external threads of the first shaft mate with the cylinder head and the first head rests on the intermediate flange; 
 the second fastener fastens the cylinder head cover to the intermediate flange such that the second external threads of the second shaft mate with the internal threads of the first fastener and the second head rests on the cylinder head cover. 
 
 
     
     
       2. The internal combustion engine as claimed in  claim 1 , wherein the first head of the first fastener rests directly on the intermediate flange. 
     
     
       3. The internal combustion engine as claimed in  claim 1 , wherein the second head of the second fastener rests directly on the cylinder head cover. 
     
     
       4. The internal combustion engine as claimed in  claim 1 , wherein a first opening extends from the intermediate flange into the cylinder head for receiving the first fastener. 
     
     
       5. The internal combustion engine as claimed in  claim 4 , wherein the first opening is shaped in the intermediate flange to receive the first head of the first fastener, and the first opening is shaped in the cylinder head to receive the first external threads of the first shaft of the first fastener. 
     
     
       6. The internal combustion engine as claimed in  claim 4 , wherein the first opening comprises a head opening shaped to receive the first head of the first fastener and a shaft opening shaped to receive the first shaft of the first fastener. 
     
     
       7. The internal combustion engine as claimed in  claim 1 , wherein a second opening is provided in the cylinder head cover for receiving the second shaft of the second fastener. 
     
     
       8. The internal combustion engine as claimed in  claim 1 , wherein the first fastener comprises only a first shaft including internal threads on one end of the first shaft and the first external threads on the opposite end of the first shaft. 
     
     
       9. The internal combustion engine as claimed in  claim 1 , wherein the second fastener comprises only a second shaft with a drive recess on an end opposite to the end having the second external threads.